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Pip's command-line interface allows the install of Python software packages by issuing a command: pip install some-package-name. Users can also remove the package by issuing a command: pip uninstall some-package-name. pip has a feature to manage full lists of packages and corresponding version numbers, possible through a "requirements" file. [14]
Conda is an open-source, [2] cross-platform, [3] language-agnostic package manager and environment management system. It was originally developed to solve package management challenges faced by Python data scientists, and today is a popular package manager for Python and R.
The Python Package Index, abbreviated as PyPI (/ ˌ p aɪ p i ˈ aɪ /) and also known as the Cheese Shop (a reference to the Monty Python's Flying Circus sketch "Cheese Shop"), [2]: 8 [3]: 742 is the official third-party software repository for Python. [4] It is analogous to the CPAN repository for Perl [5]: 36 and to the CRAN repository for R.
zip() and map() (3.x) stops after the shortest list ends, whereas map() (2.x) and itertools.zip_longest() (3.x) extends the shorter lists with None items Ruby: list1.zip(list2) list1.zip(list2, list3) list1.zip(list1, .., listn) When the list being executed upon (list1) is shorter than the lists being zipped the resulting list is the length of ...
A (complete) code freeze, in which no changes whatsoever are permitted to a portion or the entirety of the program's source code. Particularly in large software systems, any change to the source code may have unintended consequences , potentially introducing new bugs; thus, a code freeze helps ensure that a portion of the program that is known ...
The first digit is assigned regionally (for example, ZIP codes beginning with 9 are found in the western coastal states, Alaska, Hawaii, and islands in the Pacific), and ZIP codes with the same first three digits are served by the same USPS sorting facility (which sometimes serve multiple such groupings), so will be geographically clustered ...
Summarising the situation in 2013, Richard Stallman identified nine aspects which generally apply to being a GNU package, [1] but he noted that exceptions and flexibility are possible when there are good reasons: [2] The package should say that it is a GNU package. It should be distributed via ftp.gnu.org, or another site offering access to ...
A snippet of Python code with keywords highlighted in bold yellow font. The syntax of the Python programming language is the set of rules that defines how a Python program will be written and interpreted (by both the runtime system and by human readers). The Python language has many similarities to Perl, C, and Java. However, there are some ...